— ^OF THE —
EICMENS OK LANCASTER COUNYY, PA.
By Mrs. Amri^ia. K. Eby,
No list of the Lichens of Lancaster county has, to the best
of my knowledge, yet been published.
The following is only a preliminary list of the specimens
collected and analyzed as time and opportunity permitted dur-
ing the years commencing in 1884 and ending in 1893. To
these I expect to add others hereafter.
The Lichens, on account of their seeming insignificance,
have not received the attention given to larger plants.
The student cannot fail to find these humble plants both
interesting and beautiful, and they form an important part of
the economy of nature. Classed among the Cryptogamous
plants, they form what may be termed the advance guard of
the great repairing army of vegetation. They fill the waste
places, cover the barren rocks, and dying leave their crum-
bling remains to feed the mosses that follow them.
An English botanist thus writes of these : “ I'he Lichens,
though generally looked upon as unworthy of notice, are of
great consequence in the economy of nature. The crustaceous
kinds fix upon the barest rocks, and are nourished by such
slender supplies as air and the rains afford them. When these
die they are converted into a very fine earth, in which the
tiled Lichens find nourishment, and on their decaying and fall-
ing to dust, various mosses, as the Bryum Hypnum, etc.,
occupy their place. Insignificant, therefore, as these tribes
may appear, they prove that means, small and simple, may
accomplish the greatest ends. Lichens and mosses (especially
in the colder latitudes) thus constitute the very matrix of
vegetation ; by successive deposits, stratum super stratum,
providing beds capable of sustaining the seeds of more perfect
plants (conveyed by various fortuitous circumstances) till
verdure and flowers succeed to sterility, and are themselves
not unfrequently crowned by the lofty pine or the knotted oak.”
Amelia F. Eby.
Lancaster, January 29, 1894.
— OF THE —
Lichens oe Lancaster County, Renna.
By Mrs. Amelia F. Eby.
Usnea barbata (L.), Fr. a.florida. Tucquan Creek,
U. barbata, d. hirta, Fr. Mountville.
U. barbata, b. stringosa, Ach. Mountville.
U. barbata, e. plicata, Fr. Beartown.
U. barbata,/. dasypogon, Fr. Chestnut Hill.
U. longissima, Ach. Beartown.
Evernia furfuracea, Man. Cedar Hill.
E. prunastis Fite’s Eddy.
Ramalina calicaris, Fr. Cedar Hill.
> Cetraria glauca, Ach. Mountville.
C. cillaris, Ach. Chestnut Hill.
C. laciinosa, Ach. Landis Valley.
C. aurescens, Tuck. Speedwell.
C. islandica (L.), Ach. Island near Fite’s Eddy.
C. oakesiana, Tuck. Speedwell.
C. cacullata (Bell.), Ach. Near Fite’s Eddy.
Peltigeria aphthosa, Hoffm. Chestnut Hill and Martic Forge.
P. polydactyla, Hoffm. Mountville and Safe Harbor.
P. rufescens, Hoffm. Speedwell.
P. horizontalis (L.), Hoffm. Rocks along Tucquan Creek,
i P. canina, Hoffm. Chestnut Hill.
Siicta aiirata, Ach. Speedwell.
S . puhnonaria (L.), Ach. Chestnut Hill.
S', amplissima, Scop. Speedwell.
S. sylvatica, Ach. Mountville.
Parmelia caperata (L.), Ach. On rocks, Mountville.
P. perlata (L.), Ach. Speedwell.
P. conspersa, Ehr. Crowhill.
P. caperata (L.), Ack. On trees, Fite’s Eddy.
P. perforata, Ach. Chestnut Hill.
P. crinita, Ach. Beartown.
P. saxatillis, Ach. Fite’s Eddy.
Cladoma 'rangiferina (L.), Hoffm. Summy’s Woods and Fite s
C. rangiferina (L.), Hoffm., var. c. alp estris. Summy’s Woods
C. rangiferina (L.), Hoffm., var. b. sylvitica. Mountville and
C. uncialis (L.), Hoffm. Summy’s Wood’s.
C. squamosa, Hoffm. Chestnut Hill and Fite’s Eddy.
C. cornucopioides (L.), Fr. Mountville.
C. caespiticia, Pers. Mountville.
C. pulchella, Schwein. Mountville.
C. fimbriata (L.), Fr. Crow Hill.
C. gracilis Chestnut HilL
C. gracilis, b. hybrida (L.), Nyl. Speedwell.
C. gracilis (L.), Nyl., var. (a.) verticilata. Speedwell.
C. curiosa (Ach.), Spreng. Beartown.
C. symphycarpa, Fr. Crow Hill. f
C. initrula. Tuck. Beartown.
C. papillaria (Ehr.), Hoffm. Beartown.
C. fimbriata, b. tubceformis (L.), Fr. Crow Hill.
C. Boryii, Tuck. Summy’s Woods.
C. furcata, Huds., var. b. racemosa. Chestnut Hill.
C. furcata, Huds. Chestnut Hill.
C. pyxidata, Fr. Mountville.
C. cristatella. Tuck. Little Conestoga, Miss M. Zahm.
Baeomyces roseus, Pers. Chestnut Hill.
B. aerugmosus (Scop.), D. C. Crow Hill.
Biatora vernalis (L.), Fr. Chestnut Hill. ^
Umbilicaria Dillenii, Tuck. Rocks along Hammer Creek.
U. pustulata (L.), Hoffm. b. papulosa. Chestnut Hill.
U. Muhlenbergii, Tuck. Speedwell.
Endocarp07i miniatum var. Muhlenbe7'gii, Ach. Conestoga
E. 7ni7iiatu77t , Ach., var. co7nplmatu7fi. Conestoga creek.
Strmgula to7npla7iata (Fr.), Mont. Nyl. Smithville.
Physica stellaris, L. Mountville.
P. hypoleiica (L.), Michx. Fite’s Eddy.
P. leuco7fiela (L.), Michx. Fite’s Eddy.
P. obscura (Ehr.), Nyl. Hershey’s dam.
LecaTiora palida (Schreb.), Schaer. Pequea.
L. elatma (L.), Ach. Glen Manor.
L. subfusca (L.), Ach. Glen Manor.
Theloschistes parietmus (L.), Norm. Conewago.
Co7iotre7na urceolatuTn (Ach.), Tuck. Glen Manor.
StereocauloTi paschale (1..), Fr. Island above Peach Bottom.
S'. condensatu7fi, Hoffm. Beartown.
ATtthonia spectabilis, Fr. Habecker’s woods.
Graphis scripta, L. Fite’s Eddy.
Note: In naming some of the most difficult specimens in
the above list, Mrs. Eby acknowledges the assistance of Clara
E. Cummings, of Wellesley College, Mass.